Loom for weaving and cutting pile fabrics.



A. VELUARD.

LOOM FOR WEAVING AND CUTTING FILE FABRCS.

APPLICMION FILED ocr. 6. 1911.

1,300,306. Patented Apr. 15, 1919.

4 SHEETSSHEET I.

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A. VELUARD.

LOOM FOR WEAVING AND CUITING PILE FABRICS.

APPLICATION FILED OCT. s. 19H.

1,300,306. Patented Apr. 15,1919.

4 SHEETSSHEET 2.

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A. VELUARD.

LOUM FOR WEAWNG AND CUTTING PILE FABRICS.

APPLICATIGN FILED OCT. 6. HM].

1,300,306, Patented Apr. 15,1919.

A. VELUARD.

[00M FOR WEAVING AND CUTTING PILE FABRICS.

APPLICATION FILED OCT. 6. IBM.

1,300,306. Patented Apr. 15, 1919.

4 SHEETS-SHEET 4.

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t 1&3 I 5.9 i 36 26 I L f V v ///V in 2 i 4'4 wmw ANDRE VE-LUARD, or PHILADELPHIA, PENNSYLVANIA.

LOOM FOR WEAVING AND CUTTING PILE FABRICS.

Specification of Letters Patent.

Patented Apr. 15, 1919.

Application 'flld October 6, 1917. Serial No. 196,011.

To all whom it may concern Be it known that I, Axum: Vnntmnn, a citizen of the United States, residing" in the city of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain new and useful improvements in Looms for eaving and Cutting Pile Fahrics, of which the following is a specification, reference being had to the accompany iniadrawings, forming a part thereof.

y invention relates to improvements in looms for wearing and cutting pile fabrics wherein the pile is formed of floats of weft threads over pile wires which extend in the direction of the warp, and wherein knives are employed to cut the pile floats.

The ob]ect of my present invention is to improve the mechanism for cutting the pile floats: first, by the provision of a novel means whereby the knives may be actuated only at certain predetermined intervals and not at each pick or each beating up operation of the lay as heretofore, resulting in the elimination of wear and the production of a more desirable fabric; and, second, by the provision of a novel cutting knife and associated parts whercin strength and durability .of construction are combined with ease and efficiency of operation, and wherein provision is made for the ready assembling and disassembling of the parts.

With this object in view, the invention consistsof the elements and the combinations of them hereinafter described and claimed.

In the accompanying drawings, illustrating my invention;

Figure 1 is a vertical section .of a loom embodying my invention;

Fig. 2 is a rear elevation of parts of one eng portion of the com.

1g. 3 is a plan view of the cutting knives, their supports and ad'uncts.

Fig. 4 s a sectiona plan of a part of the mechanism for actuating the knives.

Fig. 5 is a sectional detail of the knife actuating mechanism on line 5-5 of Fig. 4.

Fig. 6 is a plan view of one of the knife si'ipporting members. i

Fig. is a section through the cutting mechanism, online 7-7 of Fig. 3.

Fig. 8 is a side view of one of the knives and its supporting. member.

ig. 9 is a view of one of the knives.

Fig. 10 is a transverse section through one of the knives and its support, oh line 9 -9 of Fig. 8.

Referring to the drawings, 2 desi nates the loom frame, 3 the lay, 4 the breast beam, and 6 the take-up roll for the finished fabric.

Each end of the lay 4 is connected by a bar 8 to a crank 10 on a shaft 11 which is jonrnalcd in the loom frame 2. The shaft 11 is provided with a gear wheel 12 in mesh with a gear wheel l3 on a driving shaft 14 which is adapted to be driven in the usual manner, whereby, when the shaft 1 is 1'0 tated, the lay 3 will he reciprocated toward and from the breast beam 4.

The shaft 14 carries a ear Wheel 15 which coacts with a similar w ieel 16 on a shaft 17; and the shaft 17 is provided with a bevel gear wheel 18 which drives a similar wheel 19 on the lower end of the vertical shaft 20, the shafts 17 and 20 bein mounted to turn in suitable hearings on t e ldoin frame 2. The upper end of the vertical shaft 20 is geared with and adapted to actuate a dobby mechanism 21 which is mounted on the loom frame 52 and which is of usual and Well known construction. The (lobby mechanism 21 is provided with the usual gear Wheels, hereinafter referred to, which are reciprocated at certain predetermined intervals, during the operation of the loom, under the control of the pattern mechanism of the dobby, in the usual manner, Well known to persons skilled in this art.

The warp threads as are raised and rowered by the heddles 24 which tire raised and lowered, as usual, and the finished fabric 25 is wound upon the take-up roll 6, during the interweaving of the warp and weft threads in the usual manner. 1

Extending in the direction of the warp threads 23 is a set of flexible pile Wire's 26 equal in number to the news of 'pile floats to be produced in the fabric. Each pile Wire extends freel through an eye in a he'tldl'e 97 carried by a eddle frame 28 of usual form. The rearward portion of each 'wire 98 eittends over and around a shaft 29 and down wardly therefrom and has a suitable Weight or liiig-b 30 attached to the end thereof; The forward end portion of Bflfill wire as terrht nates in a rigid end member 31 which forms, in effect, a continuation of the wire 26. a The forward end of each member 31 has a downn 39" is connected to t wardly-cxtending arm 32 which is clamped between two'bars 33 and 34. The bar 33 is secured on brackets 35 which project from the breast beam 4, and the bar 34 is secured to the bar 33 by clampin screws 36. The forward ends of the memiers' 31 and therewith the forward ends of the attached wires 26 are thus firmly held in place in suitable spaced relation to each other, corresponding with the spaces between the rows of pile floats to be formed over the wires 26.

Each end member 31 has a longitudinallyextending channel 37 formed therein; and each member 31 and the channel 37 formed therein adjacent to the attached wire 26 is narrower than the remaining portion of the member 31 and the channel 37 formed therein, as clearly shown in Fig. 6, for :1. 11111713051 hereinafter explained. The side walls of the wide portion of the channel 37, for some dis tance from the narrow portion thereof, overhang the channel 37 and extend upwardly therefrom, at 38, and the forward portion of the wide portion of the rhanne 37 of each. member 31 is free from such overhanging side walls, as illustrated, for purposes presently appearing.

Slidable within the channel 37 of each end member 31 is the lower portion of a vertically-arranged knife blade 39 having a rearwardly and upwardly inclined cutting edge 40 on its rearward end. The forward, lower portion of the blade 39 is provided with outwardly-extending, longitudinal ribs 41 which are fitted to slide within the wide forward portion of the channel 37 and the rearward, lower portion of the blade 39, free from such ribs, is fitted to slide within the narrow rearward portion of the channel 37. Each blade 39 is adapted to be reciprocated longitudinally within its channel 37, as will be hereinafter explained; and when thus reeiprocated, the ribs 41 thereof work beneath the overhan 'ng walls 38 which retain the blade 39 wit in its channel 37, and the overhanging walls 38 extend upwardly and engage the sides of the blade 39 and maintain it in vertical osition. Whenit is desired to move a blade 9 from its channel37 the blade 39 is moved forwardly until t e rearward ends of the ribs 41 clear the forward ends of the overhanging walls 38, whereupon the blade 39 may be lifted from thechannel 37 a Arranged above the clamping bars 33 and 34 is a'knife actuatin bar 42-, and each blade he bar 42 by an arm 43. The rearward end of each arm 43 is pivoted. to its blade 39, and the forward and of each arm 43 has an opening. 44 in. the bottom thereof which receives a. longitudinal rib 45 formed on the bar 42. and extending upwardly from a depressed portion thereof. The forward ends of the arms 43 are held down in engagemcut wil h the rib l5 by a bar 46 detachably secured on the bar 42 and extending over the forward ends of the arms 43. The arms 43 hold the forward llldh' of the knife blades 39 spaced from the bar 42 and, when it is desired to remove a blade 39, the retaining bar 46 is removed from the actuating bar 42, the forward end of the arm 43 is raised on its pivot, as shown by dotted lines in Fig. 8, from engagement with the rib 45. The blade 39 is then moved forwardly or toward the bar 42 until the ribs 41 thereon are moved from beneath the overhanging walls 38, whereupon the blade 39 may be moved upwardly from the member 31 and 'removed from the loom. When it is desired to insert a blade 39 into the loom, the retaining bar 46 is removed from the actuating bar 42, and the operation of removing a. blade, just described, is reversed.

The respective ends of the actuating bar 42 are provided with rollers 47 which rest upon brackets or plates 48 projecting from the brea t beam 4 and supporting the bar 42. The ends of the bar 42 are secured to the forward ends of rods 49 which have blocks 50 secured to the rearward ends thereof. The blocks 50 are pivoted to the upper ends of arms 51 which project. from a rockable shaft fitted to turn in suitable bearings on the loom frame 2, whereby, when the shaft 52 is rocked back and forth, the bar 42 will be moved back and forth to reciprocate the knife blades 39 longitudinally within the grooves 37 of the members 31. The shaft 52 is provided with a downwardly rojecting arm 53 which is pivoted to the orward cud of an arm 54 having a bifurcated rearward end which embraces the shaft 14 hereinbefore referred to. The rearward end of the arm 54 is supported by the shaft 14 and it is adapted to slide between a wheel 55 and a collar 56 fixed on the shaft 14. The arm 54 is rovided with a roller 57 which is held against the wheel 55 by a spring 58, one end of which is attached to the lower end of the arm 53 and the other end of which is attached to an arm 59 projecting from the loom frame 2. Adjacent to the wheel 55 is a collar 60 which is splined on the shaft 14 and which is provided with a cam projection 61 extendin parallel to the shaft 14 and adapted to sli e against the periphery of the wheel 55. The collar 60 is adapted to be moved longitudinally on the shaft 14 to move the cam projection 61 into and from an operative position in which it will encounter the roller 57 during the rotation of the shaft 14. Whenthe cam 61 is thus moved to its operative position, it will engage the roller 57 and move it from the wheel 55 against the action of the sprin 58 which when the cam 61 esca es it, wil return the roller 57 to the whee 55, and thus the arms 54 and 53 will be moved back and forth in a manner to rock the shaft 52 and thereby reciprocate the knife blades 39, as previously explained.

The collar 60 carrying the cam 61 has a circumferential groove formed. therein which receive pins 62 carried by lateral arms 63 projecting from a lever 64 which extends around the shaft 14. The upper end of the lever (it is 't'ulcri'ua-cd at (a), on an arm 66 which projects from the loom frame 2, and the lower end of the arm 64 is connected to one end of a spring 67 the other end of which is connected to the loom frame 2. The spring 67 holds the lever G l normally in the position shown in Fig. 2, in which the ram (31 is in the inoperative position and does not engage the roller 57 during the rotation of the shaft 14. The lower end of the lever 64 is also connected to one end of a chain 68 which passes around a pulley 69 and has its other end connected to the lower end of a rod or wire 70. The upper end of the rod or wire 7 0 is connected to one end of a chain 71 which passes around a pulley 72 and has its other end connected the upper end of an arm 73 which is pivoted at its lower end to the loom frame 2. The arm 73 is connected by a link 741 to one of the Wheels 22 hereinbefore referred to, of the d-obby mechanism 21, whereby, when the wheel 22 is turned a partial revolution under the control of the pattern mechanism of the dobby, the lever 64 will be moved against the action of the spring 67 to move the collar 60 and therewith the cam 61 to its operative position to engage the roller 57.

The operation of the loom. briefly described, is as follows:

The loom is operated as usual for the intel-weaving of the warp and weft threads to form the body of the fabric 25; and, durinn this operation, the hcddlcs 27 are raised and lowered to raise and lower the pile wires :26 above and below the shuttle path, similar to the raising and lowering of the warp threads 23 and by the usual and known mechanism cf the loom for raising and lowering the warp threads. During the weaving of 'the threads. the shuttle is shot across the shuttle race of the lay 3 and under and over the pile wires 26, as well as under and over the warp threads 23, and pile floats are produced over the pile Wires 26 in the nsua' manner. As rapidly as the pile floats are produced, they are beaten up by the lay 3, and pass to the rearward ends of the and members 31; and during the beating up of the weft threads of certain predetermined picks, the Wheel 22 of the (lobby mechanism is operated to move the cam 61 to its operative position, thereby causing the knife actuating" bar 42 to be moved back and forth; and, thereafter, the wheel 22 is operated to permit the spring '67 to move the cam 61 from its operative position. This operation. causes the knives 39 to be moved back and forth within the channels 37 of the end members 31 as previously explained. At each buck and forth movement of the kn ives 39, they cut the pile floats of the previous picks which have airumulatcd upon the end members 31 .within the paths of the cutting edges 4-0 of the knives. The intervals at which the knives 39 are thus operated may be controlled by the pattern uwchanism of the dobby 21 which controls the movement of the wheel 22, as will be readily understood by persons skilled in this art.

The pile wires 26 are kept substantially taut by the weights or lingoes 30 which move up and down and take up the slack which would otherwise occur in the wires 26 during the raising nnd lowering of the beddles 27.

The finished fabric 25. with its out pilc floats, passes from the knives 351 and menu hers 31 down to and around the takc-up roll 6.

By constructing the end members 81 of the pile wires 26 and the knives 39, as hereinbet'ore described, I am enabled to make the rearward portions of the end members Bl very narrow for the reception of the pile floats and to make the forward portions of the members 31 wider for the purposes previously explained; I thus prevent the end members 31 from stretching the pile floats and I am enabled to produce pile floats of short length.

I claim:

1. In a loom for wcaving pile fabrics, the combination of the loom frame, a pile wire extending in the direction of the warp threads, mechanism. for weaving pile fabric having pile floats of weft threads extending over said wire, a knife adjacent to said wire and movable independently thereof for outtingz the pile floats, a pattern mechanism, and means comprising a cam mechanism controlled by the pattern mechanism for actuating said knife.

.2. In a 100m for Weaving pile fabrics, the combination of the loom frame, a pile Wire extending in the direction of the Warp threads, mechanism for weaving pile fabrics having pile floats of weft threads extending over said wire a knife adjacent to said wire and movable longitudinally and independently thereof for cutting the pile floats, and means comprising cam mechanism with actual-.111 devices therefor for reciprocating said kni e.

3. In a loom for Weaving pile fabrics, the combination of the loom frame, a pile wire extending in the direction. of the Warp threads, mechanism for weaving pile fabrics having pile floats extending over said wire, a dobby mechanism, a knife adjacent to said Wire and movable independently thereof for cutting the pile floats, and means controlled by said dobby mechanism for actuating said knife at predetermined intervals.

{1. In a loom for weaving pile fabrics, the combination of the loom frame, a pile Wire extending in the direction of the warp threads, mechanism for weaving pile fabric having pile floats extending over said Wire, a dobby mechanism, a knife adjacent to said wire and movable longitudinally and independently thereof for cutting the pile floats, and means controlled by said dobby mechanism for reciprocating said knife at predetermined intervals.

5. In a loom for weaving pile fabrics, the combination of the loom frame, pile wires extending in the direction of the warp threads, mechanism for weaving pile fabric having pile floats extending over said wires, said mechanism including a lay and its reciprocating means, knives adjacent to said wires for cntling the pile floats, a pattern mechanism, and means controlled by the pattern mechanism operating to actuate said knives during certain rceiprocations of the lay only, said knives remaining idle during other reciprocations of the lay.

6. In a loom for weaving pile fabrics, the combination of the loom frame, pile wires extending in the direction of the warp threads, mechanism for weaving pile fabric having pile floats extending over said wires, said mechanism including a lay and its reciprocating means, knives adjacent to said wires and movable longitudinally and inde pendently thereof for cutting the pile floats, and means adapted to reciprocate said knives during certain reciprocations of the lay only, said knives remaining idle during other reciprocations of the lay.

7. In a loom for wcavin pile fabrics, the combination of the loom rams, pile wires extending in the direction of the warp threads, mechanism for weaving pile fabric having pile floats extending over said wires, knives adjacent to said wires for cutting the pile floats, a knife actuating bar to which said knives are connected, a rotatable shaft, means to rotate said shaft, a cam carried by said shaft and movable into and from an operative position, means to move said cam into its operative position at certain intervals, and means operated by said cam when it is in its operative position to actuate said bar,

8. In a loom for weavin pile fabrics, the combination of the loom frame, pile wires extending in the direction of the warp threads, mechanism for weaving pile fabric havi pile floats extending over said wires, a dold y mechanism, knives adjacent to said wires for cuttingthe pile floats, a knife actuating bar to which said knives are connected, a rotatable shaft, means to rotate said shaft, a cam carried by said shaft and movable into and from an operative position, means controlled by said (lobby mechanism to move said cam into and from its operative position at certain intervals, and means operated by said cam when it is in its operative position to actuate said bar.

9. In a loom for Weaving pile fabrics, the combination of the loom frame, pile wires extending in the direction of the warp threads, mechanism for weaving pile fabric having pile floats extending over said wires, knives adjacent to said Wires for cutting the pile floats, a knife actuating bar to which said knives are connected, a rotatable shaft, means to rotate said shaft continuously, and means actuated by said shaft during certain rotations thereof to actuate said bar, said bar remaining idle during other rotations of said shaft.

10. A pile wire terminating in an end member having a channel formed therein provided with an overhanging side wall, and a pile cutting knife slidable in the channel and having a rib projecting laterally beneath said wall and retaining the knife within the channel.

11. A pile wire terminating in an end member having a channel formed therein, the portion of said channel adjacent to the wire being narrower than the remaining portion of the channel farther from the wire, and a pile-cutting knife slidable in the channel and having a laterally projecting rib within the wide portion of the channel.

12. A pile wire terminating in an end member having a channel formed therein, the portion of said channel adjacent to the wire being narrower than the remaining portion of the channel farther from the wire, and the wide portion of the channel having an overhanging side wall, and a pile cutting knife slidable in the channel and having a rib projecting laterally beneath said wall and retaining the knife within the channel.

13. A pile wire terminating in an end member having a channel formed therein provided with an overhanging side wall, and a pile-cutting knife slidable in the channel and having a rib projecting laterally beneath said wall and retaining the knife within the channel, said wall and said rib being shorter than said channel, whereby said rib may be moved longitudinally from beneath said wall and thereafter the knife may be removed from the channel.

14. A pile wire terminating in an end member having a channel formed therein, the portion of said channel adjacent to the wire bein narrower than the remaining portion 0 the channel farther from the wire, and a ile cutting knife slidable in the channel an having a laterally projecting rib within the wide portion of the channel, said wall and said rib being shorter than the wide portion of said channel, whereby said rib may be moved longitudinally from beneath said wall and thereafter the knife may be removed from the channel.

15. A pile wire terminating in an end member having a channel formed therein provided with an overhanging side wall, a pile-cutting knife slidable in the channel and having a rib projecting laterally beneath said wall and retaining the knife Within the channel, an actuating bar for the knife, and an arm pivoted. to the knife and engaged with the bar and holding the knife spaced from the bar, said arm being adapted to be raised from engagement with the bar, whereby when the arm is raised from engagement with the bar the kni le rib may be withdrawn from beneath said wall for the removal of the knife from the channel.

16. A pile wire terminating in an end member having a channel formed therein provided with an overhanging side wall. a

pile-cutting knife slidable in the channel and having a rib projecting laterally beneath said Wall and retaining the knife within the channel, said wall and said rib being sl'iorter than said channel, whereby said rib may be moved longitudinally from beneath said wall and thereafter the knife may be removed from the channel, an aetnating bar for the knife, and an arm pivoted to the knife and engaged with the bar and holding the knife spaced from the bar, said arm being adapted to be raised from engagement with the bar, whereby when the arm is raised from engagement with the bar the knife rib may be withdrawn from beneath said wall for the removal of the knife from the channel.

in testimony whereof I allix my signature hereto, thi 5t b day of October, A. 1)., 1917.

A ND] {E V IGTAI l A El).

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

